dt: Move device tree documentation out of powerpc directory

The device tree is used by more than just PowerPC.  Make the documentation
directory available to all.

v2: reorganized files while moving to create arch and driver specific
    directories.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/powerpc/4xx/ndfc.txt b/Documentation/devicetree/bindings/powerpc/4xx/ndfc.txt
new file mode 100644
index 000000000000..869f0b5f16e8
--- /dev/null
+++ b/Documentation/devicetree/bindings/powerpc/4xx/ndfc.txt
@@ -0,0 +1,39 @@
+AMCC NDFC (NanD Flash Controller)
+
+Required properties:
+- compatible : "ibm,ndfc".
+- reg : should specify chip select and size used for the chip (0x2000).
+
+Optional properties:
+- ccr : NDFC config and control register value (default 0).
+- bank-settings : NDFC bank configuration register value (default 0).
+
+Notes:
+- partition(s) - follows the OF MTD standard for partitions
+
+Example:
+
+ndfc@1,0 {
+        compatible = "ibm,ndfc";
+        reg = <0x00000001 0x00000000 0x00002000>;
+        ccr = <0x00001000>;
+        bank-settings = <0x80002222>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        nand {
+                #address-cells = <1>;
+                #size-cells = <1>;
+
+                partition@0 {
+                        label = "kernel";
+                        reg = <0x00000000 0x00200000>;
+                };
+                partition@200000 {
+                        label = "root";
+                        reg = <0x00200000 0x03E00000>;
+                };
+        };
+};
+
+